POP QUIZ: Which Brand's Slogan Was "Reach Out And Touch Someone?"

Some advertising campaigns are so great that they are forever ingrained in our memories. But just because a slogan is catchy doesn’t mean it creates a good brand association. And if the brand isn’t remembered, then commercials are just wastes of a few million marketing dollars.

Advertising Age made a list of the top 100 campaigns of the century. It used three criteria to select the honored ads: if it was a watershed, if it was credited with creating a category, or if it was simply unforgettable.